Base Game

• Added rainbow lights to the rainbow theme: retro.
  
• Added new theme.
  
• Added new post processing effects to all themes.
  
• Renamed vintage theme to washed out.
  
• Made windows and blood shiny.
  
• Added parallax scrolling to the interior of buildings to give them depth.
  
• Made the ability sidekicks faster.
  
• Changed the weapon particles to be cooler.
  
• Added emissive lighting to static buildings.
  
• Added a coffee shop building.
  

Bugs

• Actually fixed the theme buttons' usability.
  
• Themes now show properly on the main menu.